Here is a listing of selected cruise lines and their vessels:

American Canadian Caribbean Line // 800-556-7450, accl-smallships.com. Grande Caribe, Grande Mariner, Niagara Prince

American Cruise Lines // 800-814-6880, americancruiselines.com. American Eagle, American Glory, American Spirit, American Star

American West Steamboat Co. // 800-434-1232, columbiarivercruise.com. Empress of the North, Queen of the West

Carnival Cruise Lines // 800-327-9501, carnival.com. Carnival Conquest, Carnival Destiny, Carnival Freedom, Carnival Glory, Carnival Legend, Carnival Liberty, Carnival Miracle, Carnival Pride, Carnival Spirit, Carnival Triumph, Carnival Valor, Carnival Victory, Celebration, Ecstasy, Elation, Fantasy, Fascination, Holiday, Imagination, Inspiration, Paradise, Sensation

Celebrity Cruises // 800-437-3111, celebritycruises.com. Celebrity Journey, Celebrity Xpedition, Century, Constellation, Galaxy, Infinity, Mercury, Millennium, Summit, Zenith

Costa Cruises // 800-462-6782, www.costacruise.com. Costa Allegra, Costa Atlantica, Costa Classica, Costa Concordia, Costa Europa, Costa Fortuna, Costa Magica, Costa Marina, Costa Mediterranea, Costa Romantica, Costa Serena, Costa Victoria

Crystal Cruises // 800-820-6663 or 800-804-1500; crystalcruises.com. Crystal Serenity, Crystal Symphony

Cunard Line // 800-528-6273; cunard.com. Queen Elizabeth 2, Queen Mary 2

Discovery World Cruises // 866-623-2689, discoveryworldcruises.com. Discovery

Disney Cruise Line // 800-951-3532; disneycruise.com. Disney Magic, Disney Wonder

Fred. Olsen Cruise Lines // 800-843-0602, www.fredolsen.co.uk. Black Prince, Black Watch, Boudicca, Braemar

French Country Waterways // 800-222-1236, fcwl.com. Adrienne, Esprit, Horizon II, Nenuphar, Princess

Galapagos Cruises // 866-672-4533, galapagos-inc.com. Ahmara, Alta, Beluga, Coral, Coral II, Diamante, Eclipse, Eric, Evolution, Flamingo, Galapagos Explorer II, Galapagos Legend, Isabella, Lammer Law, Letty, Mistral, Parranda, Santa Cruz, Xpedition

Great Lakes Cruise Co. // 888-891-0203, greatlakescruising.com. Canadian Empress, Columbus, Georgian Clipper, Grande Caribe, Grande Mariner, Spirit of Nantucket

Holland America Line // 800-426-0327, hollandamerica.com. Amsterdam, Maasdam, Oosterdam, Prinsendam, Rotterdam, Ryndam, Statendam, Veendam, Volendam, Westerdam, Zaandam, Zuiderdam

Lindblad Expeditions // 800-397-3348, expeditions.com. Islander, National Geographic Endeavour, Polaris, River Cloud, Sea Bird, Sea Cloud II, Sea Lion, Sea Voyager

Majestic America Line // 800-434-1232, majesticamericaline.com. American Queen, Columbia Queen, Contessa, Delta Queen, Empress of the North, Mississippi Queen, Queen of the West

MSC Cruises // 800-666-9333, msccruises.com. Armonia, Lirica, Melody, Musica, Opera, Orchestra, Rhapsody, Sinfonia